Ventilator



F. J. TOMSEK.

VENTILAIOR,

APPLICATION FILED JULY 31 1920.

1,406,783. Patented Feb.14,.1922'..

3 SHEETS-SHEET I.

F. J. TOMSEK.

VENTILATOR.

APPLICATION FILED JULY 31.1920.

1,406,783. Patented Feb.14, 1922.

3 SHEETS-SHEET 2.

A9 41 30 4217:23- 30 as .3/

INVENTQR ATTORNEY WITNESS:

F. J. TOMSEK.

VENTILATOR.

APPLICATION FILED JULY 31.1920.

Patented Feb. 14, 1922.

3 SHEETS-SHEET 3.

INVENTOR ATTORNEY N am;

mow/(44A W UNITED STATES,

PATENT OFFICE.

FRANK J. TOIVISEK, OF OMAHA, NEBRASKA.

VENTILATOR.

Application filed July 31,

T 0 all to 710m it may concern:

Be it known that I, FRANK J. ToMsnx, a citizen of the United States,residing at Omaha, in the county of Douglas and State of Nebraska, haveinvented new and useful Improvements in Ventilatora'of which thefollowing is a specification.

This invention relates to improvements in ventilators and has for anobject the provision of a ventilator of simple construction, formed of anumber of interlitting sections which may be shipped in knocked-downcondition and easily assembled for use.

Another object of the invention is the provision of a ventilator havingits openings protected by a grating which rests within an annular groovesurrounding the ventilator body, by means of which it is held inposition.

A further object is the provision of a novel arrangement of damper whichcontrols the passage through the ventilator.

Other objects and advantages of the invention will appear as thefollowing description is read in connection with the accompanyingdrawings.

In the drawings Figure 1 is an elevation of a ventilator embodying thepresent invention.

Figure 2 is a plan view'of the same.

- Figure 3 is a central'vertical sectional view.

Figure i is a section on the line 4-4 of Figure 3.

Figure 5 is a similar view on the line 51-5 of Figure 3.

Figure 6 is a detailed View of the damper.

Referring to the drawings in detail, wherein like characters ofreference denote corresponding parts, the reference character 10indicates the body of the ventilator which is herein shown as ofcylindrical form and is provided adjacent its top with a strengtheningbead 11, the latter being spaced from the upper edge of the body.

Extending centrally through the body of the ventilator is a pipe 12 andresting'upon this pipe is a bell shaped member 13, which is surmountedby an ornament 14. The member 13 is provided with a socket 15 so as toreceive the pipe 12 and the latter is secured within the socket by aswiveled fastening device, herein shown as a cotter pin 16, which passesthrough the bell shaped member and through openings provided in thepipe.

Specification of Letters Patent- Patented Feb. 14:, 1922.

1920. Serial No. 400,354.

Mounted upon the body 10 of the ventilator is an annulus 17 which is ofV shaped cross sectional shape and is provided around its inner edgewith a flange 18, while the adjacent edge of the annulus rests upon thebead 11. The flange 18 is positioned within agroove formed by turningover the upper end ofthe body 10 of the ventilator, as shown at 19 andthis turned over end also provides seat 20 for a damper'21 to behereinafter described. Secured tothe annulus 17 are braces 22 and 23,which are spaced around the ventilator, being bolted or otherwisesecured to the annulus 17 as indicated at24. Secured to the braces 22and 23 is a cylindrical member or collar 25 which is provided adjacentits upper and lower edges with corrugations or grooves 26,

being shown as of o-gee formation. This adds to the appearance of theventilator and serves to strengthen the collar 25. Secured to the,braces 22 as indicated at 27 and to the braces 23 as indicated at 28' isan annulus or cap 29 which is provided with a small opening surroundedby a flange 30 which extends upwardly within the bell shaped member 13against a shoulder 31 provided in the said member.

The vertical arms of the braces 22 and 23 are spaced slightly from theventilator body 10 and this space forms a seat for the reception of anannular grate member or screen 32, herein shown as formed of expansiblemetal. Any other form of screen may be substituted if desired. Thescreen may thus rest upon the annulus 17 and will remain in positionwithout any other securing means.

1 The damper 21 is formed of oppositely inclined walls 33 which arejoined at their outer edges by a seam 3 1'which provides an annular ringfor contact with the seat 20 of the body of the ventilator. The damperis provided with oppositely located openings 35 which receive the pipe12 so thatv the damper may have free sliding movement upon the pipe.Secured to the damper as indicated at 36 are cables 37 which passthrough pulleys 38 suspended from a flanged collar 39 carried by thepipe 12, the collar being secured by a pin or rivet 40.

The pulleys 38 extend within openings 11 provided in the pipe 12 and thecables 37 extend into the pipe and are connected to a chain 4.2 whichpasses downwardly within the pipe and extends through a slot 43 and isprovided with a handle 14.

By pulling downward upon the handle, the damper may be raised to thedesired height to admit of a proper amount of ventilation and ma be heldin its adjusted position by engaging the T head links oi the chain 42with the walls of the slot 43. If desired, the pipe may be bent in themanner shown by the dotted lines at 45 to allow for the ridge ribs or abuilding.

In order to guide the damper in its movement and prevent rotation uponthe pipe 12, there is secured to the damper as indicated at at, one endof an arm 47, the free end of which operates in a slot 48 formed in thepipe 12. The arm -18 is looped to provide a ring L9, within which may beinserted a drift pin so as to pull downward and release the arm from theslot, or for the purpose of inserting the arm in the slot. 1

-Disposed transversely of the body 10 of the ventilator is a strip orbrace 50 whose opposite ends are secured to the ventilator body as shownat 51 and whose intermediate portion is provided with an opening 52 forthe passage of the pipe 12. L shaped arm 53 has one end passing througha slot 5st in the brace 50 and is provided with a nut 55 by means ofwhich it is held in position. The opposite end of the arm 53 holds thesaid pipe in position.

The invention is susceptible of various changes in its form, proportionsand minor A substantially 1. A ventilator comprisinga tubular body openat the top, a substantially horizontally arranged annu us detachablysupported upon the body, braces secured to and v spaced around theannulus, a cap secured to the braces and provided with an annular flangesurrounding a central opening, a cover engageable with the flange andsurrounding the opening, an annular screen located within the braces andsupported upon the annulus, a damper for controlling the open top of thebody, guiding means for the damper and means whereby'the damper ma beoperated. r V

2. A ventilator comprising a tubular body open at the top, asubstantially horizontally arranged annulus detachably supported uponthe body,vertically disposed braces spaced around and slightly from theinner edge of the annulus, an annular screen located within the bracesand resting upon the annulus a damper operatingwithin the screen forcontrolling the open top of the body, means for operating the damper anda cap secured to the braces above the body.

In testimony whereof I ailix my signature.

FRANK J. TOMSEK.

